smartstax.com - robtex.com
smartstax.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 204.74.99.100🇺🇸 MAINT-ID-12008204.74.99.0/24 Neustar | ||||||
| PTR | crs.ultradns.net | ||||||
| NS | pdns216.ultradns.com ⭐ | ||||||
| A | 2001:502:f3ff::fc🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar | ||||||
| PTR | pdns216.ultradns.com | ||||||
| A | 156.154.64.216🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar | ||||||
| PTR | pdns216.ultradns.com | ||||||
| NS | pdns216.ultradns.biz | ||||||
| A | 2610:a1:1015::fc🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar | ||||||
| PTR | pdns216.ultradns.biz | ||||||
| A | 156.154.66.216🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar | ||||||
| PTR | pdns216.ultradns.biz | ||||||
| NS | pdns216.ultradns.net | ||||||
| A | 2610:a1:1014::fc🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar | ||||||
| PTR | pdns216.ultradns.net | ||||||
| A | 156.154.65.216🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar | ||||||
| PTR | pdns216.ultradns.net | ||||||
| NS | pdns216.ultradns.org | ||||||
| A | 2001:502:4612::fc🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar | ||||||
| PTR | pdns216.ultradns.org | ||||||
| A | 156.154.67.216🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar | ||||||
| PTR | pdns216.ultradns.org | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | pdns216.ultradns.comhostmaster@corteva.com 2019-05-13 #8 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1783824677 | ||||||
Same first word
Similar names
DNS History
11 records (5 active, 6 former)
○NSmantdnsi1.dow.com2015-05-23 → 2017-05-19 · 4 obs
● 2017-05-19 10:03:58
○ 2026-06-17 18:31:02
○ 2026-07-12 02:58:18
●NSpdns216.ultradns.biz2026-06-17 → 2026-07-12 · 3 obs
● 2026-06-17 18:31:02
● 2026-07-12 02:58:18
●NSpdns216.ultradns.com2026-06-17 → 2026-07-12 · 3 obs
● 2026-06-17 18:31:02
● 2026-07-12 02:58:18
●NSpdns216.ultradns.net2026-06-17 → 2026-07-12 · 3 obs
● 2026-06-17 18:31:02
● 2026-07-12 02:58:18
●NSpdns216.ultradns.org2026-06-17 → 2026-07-12 · 3 obs
● 2026-06-17 18:31:02
● 2026-07-12 02:58:18
○NStnntdnsi1.dow.com2015-05-23 → 2017-05-19 · 4 obs
● 2017-05-19 10:03:58
○ 2026-06-17 18:31:02
○ 2026-07-12 02:58:18
○NStxntdnsi1.dow.com2015-05-23 → 2017-05-19 · 4 obs
● 2017-05-19 10:03:58
○ 2026-06-17 18:31:02
○ 2026-07-12 02:58:18
○MXcluster4.us.messagelabs.com2015-05-23 → 2017-05-19 · 4 obs
● 2017-05-19 10:03:58
○ 2026-06-17 18:31:02
○ 2026-07-12 02:58:18
○MXcluster4a.us.messagelabs.com2015-05-23 → 2017-05-19 · 4 obs
● 2017-05-19 10:03:58
○ 2026-06-17 18:31:02
○ 2026-07-12 02:58:18
●A204.74.99.1002026-06-17 → 2026-07-12 · 3 obs
● 2026-06-17 18:31:02
● 2026-07-12 02:58:18
○A209.81.91.722015-05-23 → 2017-05-19 · 4 obs
● 2017-05-19 10:03:58
○ 2026-06-17 18:31:02
○ 2026-07-12 02:58:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, l.gtld-servers.net, a.gtld-servers.net, c.gtld-servers.net... | - |
| smartstax.com | pdns216.ultradns.net, pdns216.ultradns.com, pdns216.ultradns.biz, pdns216.ultradns.org | 2 records |
✅ Authoritative Response
Server:156.154.66.216
NS records: pdns216.ultradns.net, pdns216.ultradns.com, pdns216.ultradns.biz, pdns216.ultradns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for smartstax.com (unsigned zone)
⏱️ Timing
Total: 864ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 204.74.99.100 |
| NS | 4 | pdns216.ultradns.biz, pdns216.ultradns.com... |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | pdns216.ultradns.com hostmaster.corteva. |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (pdns216.ultradns.com, pdns216.ultradns.com)
Analysis
IP Addresses
smartstax.com resolves to one IP address: 204.74.99.100.
e1.activeoutdoors-parks.com, otis.in, dupontnutritionhealth.com and two other host names share IP numbers with smartstax.com.
Name Servers
The authoritative name servers for smartstax.com are pdns216.ultradns.biz, pdns216.ultradns.com, pdns216.ultradns.net and pdns216.ultradns.org.
There is at least partial name server overlap between smartstax.com and other domains — cortevaagriscience.solutions, tyvek.ax, molykote.at and two more among them.
These name servers regularly appear alongside pdns1.ultradns.net, pdns5.ultradns.info, pdns2.ultradns.net and 3 other name servers in NS record sets.
All four hostnames — pdns216.ultradns.biz, pdns216.ultradns.com, pdns216.ultradns.net and pdns216.ultradns.org — resolve to two IP numbers apiece: pdns216.ultradns.biz to 156.154.66.216 and 2610:a1:1015::fc; pdns216.ultradns.com to 156.154.64.216 and 2001:502:f3ff::fc; pdns216.ultradns.net to 156.154.65.216 and 2610:a1:1014::fc; pdns216.ultradns.org to 156.154.67.216 and 2001:502:4612::fc.